Critical Technical Advantages
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High-Precision Sensor Pairing: The TST90 is uniquely available in “matched pairs.” In the critical range of 0 to +120 °C, the deviation between the two sensors is limited to a remarkably low ± 0.05 K. This precision is essential for calculating enthalpy and thermal energy in heating and cooling circuits.
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Standardized Modular Architecture: Designed in accordance with DIN 43772, the TST90 ensures a high degree of insert compatibility. This allows the measurement insert to be replaced quickly without removing the thermowell from the process, minimizing downtime and maintaining system integrity.
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Optimized Thermal Response: The thermometer can be configured with a reduced tip geometry. By decreasing the thermal mass at the point of measurement, the TST90 achieves faster response times, which is vital for dynamic processes where temperature fluctuations occur rapidly.
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Robust Environmental Resilience: With a protection class rating of up to IP68, the TST90 is fully protected against dust ingress and long-term immersion in water. This makes it suitable for installation in outdoor energy distribution networks and demanding chemical environments.
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Versatile Measuring Range: Capable of measuring from –50 to +400 °C, the device covers a wide spectrum of industrial tasks, from cryogenic cooling loops to high-temperature chemical reactions.
Technical Performance Matrix
| Feature | Details |
| Measuring Range | –50 to +400 °C (–58 to +752 °F) |
| Pairing Accuracy (0 to 120 °C) | ± 0.05 K deviation |
| Pairing Accuracy (–40 to 0 °C) | ± 0.1 K deviation |
| Protection Class | Up to IP68 |
| Standard Compliance | DIN 43772 |
| Insert Design | Fast replaceable modular insert |
| Tip Form | Standard or reduced for fast response |
Primary Applications
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Thermal Energy Metering: Used in matched pairs for custody transfer and internal billing of heating and cooling energy in industrial complexes.
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Chemical Process Control: High-accuracy temperature monitoring in reactors where precise delta-T (temperature difference) measurements dictate reaction yields.
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District Heating and Cooling: Providing stable, long-term measurement for large-scale urban energy distribution networks.
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HVAC and Refrigeration: Precision tracking of heat exchanger performance in large-scale commercial climate control systems.
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Boiler and Feedwater Systems: Monitoring the efficiency of steam generation and condensate recovery loops.
